Our rental agreement requires all tenants to comply with the laws for our jurisdiction as relates to the rental unit and residency.

If you need to, serve a legal notice to comply.

Many tiny houses are built on trailers with wheel and axles to avoid building codes and be considered a trailer which in many states would have a vehicle license.The gotcha however is that this still may not avoid/evade codes as many codes don't allow RV, trailers or mobile homes.It you go the other way and build a Tiny House without a trailer/wheels/axles, then you still have to comply with building codes which in many areas have minimum square footages. 

I like renting to well educated people who have a good track record, as they are more likely to comply with the terms of the rental agreement than someone who has nothing to lose.

Give them a notice to comply or quit. 

Normally, you need to give written warnings first and give the tenant the opportunity to comply before evicting.

(iv) The junior accessory dwelling unit complies with the requirements of Section 65852.22.

Ask she use a commercial washer if she can not comply with the prior requests.

As a landlord complying with government regulations should be the least of your worries.

@Jason Craft  There is a whole set of rules that you must comply with when renting a home.